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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>

    </style>
</head>

<body>

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<script>
    //手机
    function Phone(brand, price) {
        this.price = price
        this.brand = brand
    }
    Phone.prototype.call = function () {
        console.log("我可以打电话")
    }

    //智能手机
    function SmartPhone(brand, price, color, size) {
        Phone.call(this, brand, price)
        this.color=color
        this.size=size
    }
    //设置子集构造函数原理
    SmartPhone.prototype=new Phone;
    SmartPhone.prototype.constructor=SmartPhone

    //声明子类的方法
    SmartPhone.prototype.photo=function(){
        console.log("我可以拍照")
    }
    SmartPhone.prototype.playGame=function(){
        console.log("我可以玩游戏")
    }
    const chuizi=new SmartPhone('锤子',2499,"黑色",'5056cm')

    console.log(chuizi)
</script>

</html>